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Similarweb Ltd.

SMWB
Exchange
NYSE
Industry
Services-Computer Programming, Data Processing, Etc.
SEC CIK
0001842731

In the last 90 days, Similarweb Ltd. insiders filed 0 open-market purchases and 9 sales; 70 institutions reported holding it in 13F filings for Q2 2026, worth $312.1M in total; ARK Invest is the only superinvestor holding it.

Key figures

Insider buysOpen market, last 90 days
0
Insider sellsLast 90 days, $15.2M in total
9
13F holdersQ2 2026, −10 vs. previous quarter
70
13F valueReported value at the end of Q2 2026
$312.1M
Superinvestors holdingAt the end of Q2 2026
1

Price chart

Superinvestors holding SMWB, Q2 2026

1 superinvestor reports holding Similarweb Ltd. on Form 13F. Percentages are the stock's share of each portfolio.

Go to the superinvestors tab

ARK Invest

Cathie Wood

<0.1%

Similarweb Ltd.'s share of the portfolio

Shares
834,663
Value
$5.12M

Latest insider trades

Open-market purchases and sales by Similarweb Ltd. insiders from Form 4, newest first.

See all insider trades
Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Sep 25, 2026 (view filing)7:46 AM ETSep 241 dayOffer OrChief Executive OfficerSSale−114.3K$7.69−$879.1K−2.8%3.93M after2 lots10b5-1
Sep 24, 2026 (view filing)7:56 AM ETSep 22-232 daysOffer OrChief Executive OfficerSSale−62.9K$8.45−$531.4K−1.5%4.04M after2 lots10b5-1
Sep 22, 2026 (view filing)7:43 AM ETSep 18-214 daysOffer OrChief Executive OfficerSSale−69.7K$8.32−$579.9K−1.7%4.11M after2 lots10b5-1
Sep 18, 2026 (view filing)6:13 AM ETSep 16-172 daysOffer OrChief Executive OfficerSSale−76.1K$8.38−$637.6K−1.8%4.18M after2 lots10b5-1
Sep 16, 2026 (view filing)9:07 AM ETSep 14-152 daysOffer OrChief Executive OfficerSSale−79.6K$8.53−$679.2K−1.8%4.25M afterAmended2 lots10b5-1Duplicate filing
Sep 16, 2026 (view filing)7:01 AM ETSep 14-152 daysOffer OrChief Executive OfficerSSale−79.6K$8.53−$679.2K−1.8%4.25M after2 lots10b5-1Duplicate filing
Sep 16, 2026 (view filing)6:55 AM ETSep 14-152 daysOffer OrChief Executive OfficerSSale−79.6K$8.53−$679.2K−1.8%4.25M after2 lots10b5-1
Sep 14, 2026 (view filing)9:07 AM ETSep 10-114 daysOffer OrChief Executive OfficerSSale−118.2K$8.06−$952.2K−2.7%4.33M after2 lots10b5-1
Sep 10, 2026 (view filing)9:28 AM ETSep 8-92 daysOffer OrChief Executive OfficerSSale−147.0K$8.17−$1.20M−3.2%4.45M after2 lots10b5-1
Aug 27, 2026 (view filing)8:03 AM ETAug 261 dayOffer OrChief Executive OfficerSSale−383.1K$9.00−$3.45M−7.7%4.60M after4 lots

Top 10 13F holders, Q2 2026

The largest institutional positions in Similarweb Ltd. at the end of Q2 2026; share changes are against Q1 2026.

See all 70 holders
Institutions holding SMWB in Q2 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Naspers Ltd11,173,265$68.5M81.19%00.0%Unchanged
Viola Growth Management Fund 2 Ltd.10,810,778$66.3M88.48%+10,810,778New
Menora Mivtachim Holdings Ltd.4,015,494$24.6M0.10%00.0%Unchanged
Wellington Management Group LLP3,624,685$22.2M0.00%+657,928+22.2%Added
ION Crossover Partners Ltd3,030,826$18.6M24.88%00.0%Unchanged
Ulysses Management LLC2,928,474$18.0M6.21%−70,000−2.3%Reduced
S Squared Technology, LLC1,690,000$10.4M3.21%+90,000+5.6%Added
Schonfeld Strategic Advisors LLC1,210,629$7.42M0.04%+921,455+318.7%Added
Y.D. More Investments Ltd1,147,035$7.03M0.22%−4,263−0.4%Reduced
ARK Investment Management LLCSuperinvestorARK Invest834,663$5.12M0.03%+482,593+137.1%Added